Answer:
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Step-by-step explanation:
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Answer:
The answer to your question is: Salt
Step-by-step explanation:
Element: is a substance that cannot be converted into another substance.
Compound: is a substance that is formed by 2 or more elements.
Mixture: is a substance composed by 2 or more compounds.
Iron it is an element
Salt it is a compound
River sediment it is a mixture
Ocean water it is a mixture
Area:
A = base times height/2
Perimeter:
base time length times width
The quadratic function in vertex form is
.
Solution:
The equation of a quadratic in vertex form is
.
where (h, k) are the coordinates of the vertex and "a" is a multiplier.
Here (h, k) = (5, –2)
Substitute this in the vertex form.

– – – – (1)
Passes through the point (7, 0).
Here x = 7 and y = 0.
Substitute this in equation (1), we get


Add 2 on both sides.
2 = 4a
Divide 2 on both sides, we get

Substitute the value of a in equation (1),

The quadratic function in vertex form is
.
Answer:
45 degrees
Step-by-step explanation:
An octagon is 360 degrees and 360 divided by 8 is 45.